public int compareTo()

in commons-vfs2/src/main/java/org/apache/commons/vfs2/FileSystemOptions.java [139:179]
33 lines of code
11 McCabe index (conditional complexity)

    public int compareTo(final FileSystemOptions other) {
        if (this == other) {
            // the same instance
            return 0;
        }

        final int propsSz = options == null ? 0 : options.size();
        final int propsFkSz = other.options == null ? 0 : other.options.size();
        if (propsSz < propsFkSz) {
            return -1;
        }
        if (propsSz > propsFkSz) {
            return 1;
        }
        if (propsSz == 0) {
            // props empty
            return 0;
        }

        // ensure proper sequence of options
        final SortedMap<FileSystemOptionKey, Object> myOptions = options instanceof SortedMap
                ? (SortedMap<FileSystemOptionKey, Object>) options
                : new TreeMap<>(options);
        final SortedMap<FileSystemOptionKey, Object> theirOptions = other.options instanceof SortedMap
                ? (SortedMap<FileSystemOptionKey, Object>) other.options
                : new TreeMap<>(other.options);
        final Iterator<FileSystemOptionKey> optKeysIter = myOptions.keySet().iterator();
        final Iterator<FileSystemOptionKey> otherKeysIter = theirOptions.keySet().iterator();
        while (optKeysIter.hasNext()) {
            final int comp = optKeysIter.next().compareTo(otherKeysIter.next());
            if (comp != 0) {
                return comp;
            }
        }

        final int hash = Arrays.deepHashCode(myOptions.values().toArray());
        final int hashFk = Arrays.deepHashCode(theirOptions.values().toArray());
        return Integer.compare(hash, hashFk);

        // TODO: compare Entry by Entry ??
    }